A Cobalt-Catalyzed Enantioconvergent Radical Negishi C(sp3)–C(sp2) Cross-Coupling with Chiral Multidentate N,N,P-Ligand
Organometallics(2021)
摘要
A cobalt-catalyzed enantioconvergent radical Negishi C(sp3)–C(sp2) cross-coupling of racemic benzyl chlorides with arylzinc reagents has been developed in good yield with moderate enantioselectivities. This strategy provides an expedient access toward a range of enantioenriched 1,1-diarylmethanes. Key to this discovery is the utilization of a chiral multidentate anionic N,N,P-ligand to strongly coordinate with the cobalt catalyst and tune its chiral environment, thus achieving the enantiocontrol over the highly reactive prochiral alkyl radical species.
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关键词
chiral multidentate,cobalt-catalyzed,cross-coupling
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